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Startups14,448Programs29

14,448 startups · 29 programs

Aside

Active · The browser built to do real work for you

WebsiteYC profile

Why it ranks

How the rank works
11signal of 100 · rising 10
  • team of 8Team size · YC's directory+4.9
  • went through YCProgram · this site+4
  • hiringHiring · Titles (titles.fru.dev), YC+2

A sum of public facts, not a judgement and not investment advice.

Competitors

AIOpensteerShared: real work, automation, browserYC S23Los AngelesStartup →AIAcquiredAutotabShared: real work, automation, agentYC S23San FranciscoStartup →AIArtisanShared: real work, automation, websiteYC W24San FranciscoStartup →AIstagewiseShared: work inside, real work, memoryYC S25Startup →AIweXareShared: complete real, work, agentBetaworks AI Camp: Agent SystemsStartup →
Companies closest to Aside
Company
OpensteerShared: real work, automation, browserYC S23ActiveAI, Devtools
AutotabShared: real work, automation, agentYC S23AcquiredAI
ArtisanShared: real work, automation, websiteYC W24ActiveAI
stagewiseShared: work inside, real work, memoryYC S25ActiveAI, Devtools
weXareShared: complete real, work, agentBetaworks AI Camp: Agent SystemsNot statedAI

Adjacent

OtherSentry.coShared: password managerAntler 2020NorwayStartup →Developer toolsRetoolShared: internal toolYC W17San FranciscoStartup →AIInactiveOliveShared: internal toolYC W25San FranciscoStartup →AIOoak DataShared: real work, internal, agentYC S26San FranciscoStartup →AITurnstoneShared: real work, know, agentYC W26San FranciscoStartup →
Companies next to Aside
Company
Sentry.coShared: password managerAntler 2020Not statedOther
RetoolShared: internal toolYC W17ActiveDevtools
OliveShared: internal toolYC W25InactiveAI
Ooak DataShared: real work, internal, agentYC S26ActiveAI
TurnstoneShared: real work, know, agentYC W26ActiveAI

Also from F25 in AI

All of F25
AIBraviAI operating system for home improvement manufacturersYC F25New York CityStartup →AICaddyYour Personal AI for everyday work. Lives in your texts.YC F25New York CityStartup →AIitemThe AI-Native CRM that works for youYC F25San FranciscoStartup →AIAbsurdThe production canvas for AI film teamsYC F25Los AngelesStartup →AIAirCaps AIVoice AI that hears what other models miss.YC F25San FranciscoStartup →AIAlderAI employees for finance, starting with accounts receivable.YC F25San FranciscoStartup →
Company
BraviAI operating system for home improvement manufacturersteam of 8ActiveAI
CaddyYour Personal AI for everyday work. Lives in your texts.team of 5ActiveAI, Devtools
itemThe AI-Native CRM that works for youteam of 6hiringActiveAI
AbsurdThe production canvas for AI film teamsteam of 10ActiveAI
AirCaps AIVoice AI that hears what other models miss.team of 5hiringActiveAI, Devtools
AlderAI employees for finance, starting with accounts receivable.team of 2hiringActiveAI

Founders

  • Jun KimFounder/CEO
  • Chanhee LeeFounder/CPO
  • Sanghun LeeFounder/CTO

About Aside

Aside is an AI browser that completes real work across the websites you already use. It can sign in through your browser, work inside email, dashboards, internal tools, docs, and spreadsheets, and keep going when a task takes minutes or hours. Unlike agents that depend on integrations, Aside uses the web the way you do. Browsing history becomes local memory, so it knows which tools and context matter. Its password manager lets agents autofill credentials without exposing secrets to the AI. Sensitive actions like payments, posts, and messages wait for your approval. We achieved state-of-the-art on agentic browsing benchmarks, surpassing OpenAI and Anthropic's result- Aside ranked #1 across Mind2Web, Odyssey, bu-bench-v1.

YC batch
F25 · Fall 2025
Status, per YC
Active
Category
AI
Team size
8
Location
San Francisco, CA, USA
Founded
2024
Checked
6h ago

YC tags: SaaS, Automation, AI

Changes seen

TagsOct 19, 2026

Newly tagged AI; no longer tagged Artificial Intelligence.

Source ↗

Aside in F25: 146 companies, 88% AI

GitHub LinkedIn

Aside: questions

Which YC batch was Aside in?

Aside was in Y Combinator's Fall 2025 batch (F25).

Is Aside still active?

Y Combinator lists Aside as active.

Who founded Aside?

Aside's founders, as listed on its YC page: Jun Kim (Founder/CEO), Chanhee Lee (Founder/CPO), Sanghun Lee (Founder/CTO).

Where is Aside based?

Aside lists San Francisco, CA, USA as its location on YC's directory.